From 69219a4db8e40f31b7fd0fa1465dba0b3cdbb219 Mon Sep 17 00:00:00 2001 From: Daniel Date: Sun, 26 Sep 2021 13:36:33 +0200 Subject: [PATCH] Copy input data if slice has additional space The additional space could be corrupted, because some libraries check for slice capacity and use the available additional space of the slice. --- core.go | 9 +++++++++ go.sum | 12 ++++++++++++ 2 files changed, 21 insertions(+) diff --git a/core.go b/core.go index 1063b8c..aeb1f9d 100644 --- a/core.go +++ b/core.go @@ -19,6 +19,15 @@ func (s *Session) Close(data []byte) (*Letter, error) { //nolint:gocognit letter.SuiteID = s.envelope.SuiteID } + // Check for additional data in slice, which we should not touch. + // TODO: Pre-allocate needed overhead for AEAD and others. + if len(data) != cap(data) { + // Make a copy of the data in order to not modify unrelated data. + copiedData := make([]byte, len(data)) + copy(copiedData, data) + data = copiedData + } + ///////////////// // key management ///////////////// diff --git a/go.sum b/go.sum index 71ebb9a..102f18b 100644 --- a/go.sum +++ b/go.sum @@ -23,6 +23,7 @@ github.com/StackExchange/wmi v0.0.0-20210224194228-fe8f1750fd46/go.mod h1:3eOhrU github.com/VictoriaMetrics/metrics v1.15.2/go.mod h1:Z1tSfPfngDn12bTfZSCqArT3OPY3u88J12hSoOhuiRE= github.com/aead/ecdh v0.2.0 h1:pYop54xVaq/CEREFEcukHRZfTdjiWvYIsZDXXrBapQQ= github.com/aead/ecdh v0.2.0/go.mod h1:a9HHtXuSo8J1Js1MwLQx2mBhkXMT6YwUmVVEY4tTB8U= +github.com/aead/serpent v0.0.0-20160714141033-fba169763ea6 h1:5L8Mj9Co9sJVgW3TpYk2gxGJnDjsYuboNTcRmbtGKGs= github.com/aead/serpent v0.0.0-20160714141033-fba169763ea6/go.mod h1:3HgLJ9d18kXMLQlJvIY3+FszZYMxCz8WfE2MQ7hDY0w= github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc= github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0= @@ -35,6 +36,7 @@ github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8= github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs= github.com/bketelsen/crypt v0.0.3-0.20200106085610-5cbc8cc4026c/go.mod h1:MKsuJmJgSg28kpZDP6UIiPt0e0Oz0kqKNGyRaWEPv84= +github.com/bluele/gcache v0.0.2 h1:WcbfdXICg7G/DGBh1PFfcirkWOQV+v077yF1pSy3DGw= github.com/bluele/gcache v0.0.2/go.mod h1:m15KV+ECjptwSPxKhOhQoAFQVtUFjTVkc3H8o0t/fp0= github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU= github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc= @@ -70,6 +72,7 @@ github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9 github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk= github.com/go-ole/go-ole v1.2.5/go.mod h1:pprOEPIfldk/42T2oK7lQ4v4JSDwmV0As9GaiUsvbm0= github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY= +github.com/gofrs/uuid v4.0.0+incompatible h1:1SD/1F5pU8p29ybwgQSwpQk+mwdRrXCYuPhW6m+TnJw= github.com/gofrs/uuid v4.0.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM= github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ= github.com/gogo/protobuf v1.2.1/go.mod h1:hp+jE20tsWTFYpLwKvXlhS1hjn+gTNwPg2I6zVXpSg4= @@ -103,7 +106,9 @@ github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm4 github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+vpHVxEJEs9eg= github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5mhpdKc/us6bOk= github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY= +github.com/gorilla/mux v1.8.0 h1:i40aqfkR1h2SlN9hojwV5ZA91wcXFOvkdNIeFDP5koI= github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So= +github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc= github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE= github.com/grpc-ecosystem/go-grpc-middleware v1.0.0/go.mod h1:FiyG127CGDf3tlThmgyCl78X/SZQqEOJBCDaAfeWzPs= github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0/go.mod h1:8NvIoxWQoOIhqOTXgfV/d3M/q6VIi02HzZEHgUlZvzk= @@ -209,8 +214,11 @@ github.com/safing/portbase v0.11.0/go.mod h1:Xb0htNFFEb6BlkloWyVbQoUguUMGrTVmEDw github.com/satori/go.uuid v1.2.0 h1:0uYX9dsZ2yD7q2RtLRtPSdGDWzjeM3TbMJP9utgA0ww= github.com/satori/go.uuid v1.2.0/go.mod h1:dA0hQrYB0VpLJoorglMZABFdXlWrHn1NEOzdhQKdks0= github.com/sean-/seed v0.0.0-20170313163322-e2103e2c3529/go.mod h1:DxrIzT+xaE7yg65j358z/aeFdxmN0P9QXhEzd20vsDc= +github.com/seehuhn/fortuna v1.0.1 h1:lu9+CHsmR0bZnx5Ay646XvCSRJ8PJTi5UYJwDBX68H0= github.com/seehuhn/fortuna v1.0.1/go.mod h1:LX8ubejCnUoT/hX+1aKUtbKls2H6DRkqzkc7TdR3iis= +github.com/seehuhn/sha256d v1.0.0 h1:TXTsAuEWr02QjRm153Fnvvb6fXXDo7Bmy1FizxarGYw= github.com/seehuhn/sha256d v1.0.0/go.mod h1:PEuxg9faClSveVuFXacQmi+NtDI/PX8bpKjtNzf2+s4= +github.com/shirou/gopsutil v3.21.2+incompatible h1:U+YvJfjCh6MslYlIAXvPtzhW3YZEtc9uncueUNpD/0A= github.com/shirou/gopsutil v3.21.2+incompatible/go.mod h1:5b4v6he4MtMOwMlS0TUMTu2PcXUg8+E1lC7eC3UO/RA= github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc= github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo= @@ -244,10 +252,14 @@ github.com/tevino/abool v0.0.0-20170917061928-9b9efcf221b5 h1:hNna6Fi0eP1f2sMBe/ github.com/tevino/abool v0.0.0-20170917061928-9b9efcf221b5/go.mod h1:f1SCnEOt6sc3fOJfPQDRDzHOtSXuTtnz0ImG9kPRDV0= github.com/tevino/abool v1.2.0 h1:heAkClL8H6w+mK5md9dzsuohKeXHUpY7Vw0ZCKW+huA= github.com/tevino/abool v1.2.0/go.mod h1:qc66Pna1RiIsPa7O4Egxxs9OqkuxDX55zznh9K07Tzg= +github.com/tidwall/gjson v1.6.8 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